Fossil fuels
Starter
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BURNING
CAPROCK
CHEMICAL
COAL
ENERGY
FOSSILS
FUEL
HEAT
HEAT
LIGHT
OIL
PETROL
REMAINS
SMOKE
| F | U | E | L | F | R | C | C | M |
| Z | L | E | K | O | M | S | A | B |
| Y | O | A | B | S | L | N | P | U |
| G | R | D | C | L | X | I | R | R |
| R | T | T | T | I | F | A | O | N |
| E | E | H | A | S | M | M | C | I |
| N | P | G | E | S | Z | E | K | N |
| E | S | I | H | O | R | R | H | G |
| G | A | L | N | F | L | A | O | C |
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